Alpha (stabilized) · Reddish blue
Pigment Blue 15:1
Stabilized Alpha Copper Phthalocyanine
CAS 147-14-8
A stabilized alpha form of copper phthalocyanine that resists crystal conversion to the beta polymorph. Surface treatment provides improved solvent stability compared to PB 15:0, making it suitable for a wider range of solvent-based ink and coating systems while retaining the characteristic reddish blue shade.
Technical Specifications
| Property | Value |
|---|---|
| Molecular Formula | C₃₂H₁₆CuN₈ |
| Molecular Weight | 576.08 g/mol |
| Density | 1.52 g/cm³ |
| Specific Surface Area | 45–60 m²/g |
| Oil Absorption | 42–52 ml/100g |
| pH (10% suspension) | 6.5–8.0 |
| Moisture Content | ≤ 1.0% |
Fastness Ratings
| Property | Full shade | 1:1 with TiO₂ |
|---|---|---|
| Lightfastness | 8 | 7 |
| Weatherfastness | 5 | 4 |
Solvent Resistance
| Solvent | Rating (1–5) |
|---|---|
| Water | 5 |
| Ethanol | 5 |
| Ketones | 5 |
| Esters | 5 |
| Aromatic hydrocarbons | 4 |
Application Suitability
| Application | Suitable | Notes |
|---|---|---|
| Inks | ✓ | Offset, flexo, solvent-based |
| Coatings & Paints | ✓ | General industrial, decorative |
| Plastics | ✓ | PVC, polyolefins |
| Textile Printing | ✓ |
Regulatory Compliance
FDA 21 CFR 178.3297EN 71-3 (Toy Safety)RoHSREACHTSCA
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